Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 169-1-020 found under Housing Assy by Interstate Electronics Inc. The National Stock Number assigned to this part is 2995009289275, and the Federal Supply Class is 2995 Miscellaneous Engine Accessories Aircraft. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 169-1-020.